The Gunner profile is a blend of two of the best performing profiles of all time, Gov't and Pencil. Faxon's Gunner profile combines the durability of the Gov't profile with the weight savings and maneuverability of the Pencil profile. The Gunner profile brings the balance of the rifle back towards the shooter's body, limiting fatigue, and allowing for shooting, training, or hunting all day long.Faxon's MATCH SERIES of barrels takes our renowned performance and value up a notch.Manufactured in-house from gun-barrel-quality bar-stock, the Match Series starts with 416-R in 5R rifling. 5R is a hybrid rifling, with lands opposite grooves and reduced sharp angles that reduces jacket deformation increasing velocity and easy cleaning. We chamber our Match Series in .223 Wylde, a hybrid chamber that the 5R rifling takes full advantage of. Better accuracy through less bullet jump, but fully and individually MPI tested for your safety. After rigorous testing, the barrels are Nitride treated inside and out, locking in the bore, improving barrel life, and keeping the elements at bay. The extension is coated in Nickel Teflon which maintains incredible dry lubricity, corrosion resistance, and with the coating, tightens up fit between the extension and receiver - again improving upon accuracy. Combined, the Match Series of barrels are ready for when duty calls or the buzzer beeps with unrivaled performance value. Product Specifications Series: Match Series Model: Gunner Caliber: .223 Wylde Firearm Fit: AR-15 Material: 416-R Stainless Steel Firearm Type: Rifle Finish: Salt Bath Nitride Barrel Type: 5R Button Rifled Twist: 1:8" Length: 16" Thread Pattern: 1 / 2"x28 Weight: 1.33 lbs